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Dissertations / Theses on the topic 'Halogens. Halides'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Awwadi, Firas Fandi. "A crystallographic and theoretical study of halogen---halogen and halogen---halide synthons." Online access for everyone, 2005. http://www.dissertations.wsu.edu/Dissertations/Summer2005/F%5FAwwadi%5F072705.pdf.

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2

Jackman, R. B. "Interfacial chemistry of metal carbonyls, metal halides and halogens : Surface studies with application to photon and electron enhanced processes on semiconductors." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374568.

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3

Meerbach, Christian, Cong Wu, Steven C. Erwin, Zhiya Dang, Anatol Prudnikau, and Vladimir Lesnyak. "Halide-Assisted Synthesis of Cadmium Chalcogenide Nanoplatelets." American Chemical Association, 2019. https://tud.qucosa.de/id/qucosa%3A74323.

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Atomically flat colloidal semiconductor CdSe nanoplatelets (NPLs) with precisely controlled thickness possess a range of unique optoelectronic properties. Here, we study the growth of CdSe, CdTe, and CdS NPLs with the aim of synthesizing thicker NPLs in order to extend their optical activity further into the lower energy/larger wavelength range. We employ cadmium halides, which lead to faster reaction kinetics as confirmed by control experiments with cadmium hydroxide as a Cd-precursor. Addition of halides in all cases led to the formation of thicker NPL species, as compared with the correspon

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4

Torrey, Jason Robert. "Antimicrobial Properties Of Metal And Metal-Halide Nanoparticles And Their Potential Applications." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338682.

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Heavy metals have been known to possess antimicrobial properties against bacterial, fungal, and viral pathogens. Silver and copper in particular have been used for millennia to control bacterial and fungal contamination. Metal nanoparticles (aggregations of metal atoms 1-200 nm in size) have recently become the subject of intensive study for their increased antimicrobial properties due to their increased surface area and localized release of metal ions when attached to pathogens. In the current studies, metal and metalhalide nanoparticles including silver (Ag), silver bromide (AgBr), silver io

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5

Attrell, Robert J. "A Solid-State 35Cl and 81Br NMR and Computational Study of Chlorine and Bromine Electric Field Gradient and Chemical Shift Tensors in Haloanilinium Halides." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20546.

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The results of a systematic 35Cl, 81Br, and 127I SSNMR spectroscopic study of a series of halogen-substituted anilinium halide salts are presented. Solid-state NMR of these nuclides, bromine-/81 and iodine-127 in particular, is not well established. Twenty-one compounds thought to exhibit halogen bonding were prepared based on modified literature procedures, and two crystal structures were solved. Experiments show that collection of SSNMR spectra of the anions is feasible, though ultrahigh magnetic fields (21.1 T) and variable offset data acquisition were found to be essential. Electric fi

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6

Ratcliffe, Shane. "Cocrystals of urea, complex chemistry of thioureas with group 15 halides and halogen adducts of tertiary phosphine selenides." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.706079.

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7

Balkenhohl, Moritz [Verfasser], and Paul [Akademischer Betreuer] Knochel. "Metalation and amination of N-heterocycles and the halogen/zinc exchange of aryl halides / Moritz Balkenhohl ; Betreuer: Paul Knochel." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1211957128/34.

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8

Machover, Sarah B. "Understanding the Solvent-free Nucleophilic Substitution Reaction Performed in the High Speed Ball Mill (HSBM): Reactions of Secondary Alkyl Halides and Alkali Metal-Halogen Salts." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307043848.

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9

Claros, Casielles Miguel. "Development of Visible Light Photoredox Methodologies towards the Activation of Carbon-Halogen Bonds." Doctoral thesis, Universitat Rovira i Virgili, 2020. http://hdl.handle.net/10803/669435.

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Metodologies fotocatalítiques sota irradiació de llum visible han estat desenvolupades amb diversos substrats disponibles al mercat com ara els àcids carboxílics, trifluoroboratos alquílics de potassi, silicats alquílics d'amoni o èsters activats entre d'altres. Sota irradiació de llum, aquests precursors s'activen mitjançant processos de transferència d'un sol electró amb catalitzadors fotoexcitables (PC). Entre ells, els halurs orgànics són socis d'acoblament convenients en la fotocatàlisi, ja que experimenten una escissió de l'enllaç C-halogen catalitzada per diversos PC en presència d'un d

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10

Davis, Anthony Alan. "The structure and chemistry of InSb(001) and InP(001) : clean surface structure, halogen adsorption and layered halide growth by rotational epitaxy." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243492.

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11

Le, Gars Pierre. "Synthese directe de chlorures d'acide par carbonylation de derives halogenes aliphatiques." Toulouse 3, 1987. http://www.theses.fr/1987TOU30199.

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12

Rehermann, Carolin. "Exploring the Precursor-Process-Property Space in Metal Halide Perovskite Thin-Films." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/23095.

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Die Anpassung der Bandlücke und die Herstellung mittels lösungsbasierter Prozesse charakterisieren Metallhalogenid-Perowskite. Sie sind vielversprechend für die Anwendung in optoelektronischen Bauteilen, die die Abscheidung von hochwertigen Dünnschichten erfordern. Deren Qualität hängt stark vom Kristallisationsverhalten ab, welches durch die Komposition der Lösung bestimmt ist. Ziel dieser Arbeit ist es, Korrelationen im Präkursor-Prozess-Eigenschaftsraum von Metallhalogenid-Perowskit zu bewerten und Formierungsprozesse zu rationalisieren. Phasenreinheit, Morphologie und Absorptionseigenscha

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13

Estienne, Jacques. "Des halogènes dans les édifices moléculaires étioniques : études cristallographiques, corrélations structure-réactivité, structure-conductivité, modèles structuraux." Aix-Marseille 1, 1986. http://www.theses.fr/1986AIX11001.

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Etude structurale de substances pouvant intervenir en tant que catalyseurs ou conducteurs electriques dans le monde industriel, dans le cadre de trois modeles : modele de l'atome cl mu -ponsteur co::(3) cl(c::(2)f::(3)o::(2))::(3)(so::(4))(c::(4)h::(10)o::(2))::(3) et mn::(4)cl::(4)(c::(2)f::(3)o::(2))::(4)(c::(4)h::(10)o)::(6), modele de l'ion tribromure dans des composes organiques et modele de l'iodure simple (iodures organiques comportant des dications diazoniatricycliques c::(14)h::(28)n::(2)**(2+). 2i**(-) et c::(15)h::(30)n::(2)**(2+). 2i**(-) et de l'ion iodoargentate (ag::(4) i::(8)**

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14

Krbal, Michal. "Účinnost přeměny elektrické energie na světlo u současných světelných zdrojů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218541.

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The goal of this diploma’s thesis is to inform about present development of light sources, new technologies and about achieved parameters of these light sources. The thesis is mainly directed to describe efficiency of transformation electric energy to light at single types of light sources. There are described the concrete technical parameters of sources quoted by manufacturers and the contructional solution of single types of light sources. There is created a graphic comparation of electrotechnical and light parameters of the light sources.

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15

Francese, Catherine. "Reactions du bromotrifluoromethane en presence de zinc : trifluoromethylations dans les conditions de barbier." Paris 6, 1987. http://www.theses.fr/1987PA066381.

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16

Thangavadivale, V., P. M. Aguiar, N. A. Jasim, et al. "Self-complementary nickel halides enable multifaceted comparisons of intermolecular halogen bonds: fluoride ligands vs. other halides." 2018. http://hdl.handle.net/10454/17688.

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Yes<br>The syntheses of three series of complexes designed with self-complementary motifs for formation of halogen bonds between an iodotetrafluorophenyl ligand and a halide ligand at square-planar nickel are reported, allowing structural comparisons of halogen bonding between all four halides C6F4I⋯X–Ni (X = F, Cl, Br, I). In the series trans-[NiX(2,3,5,6-C6F4I)(PEt3)2] 1pX and trans-[NiX(2,3,4,5-C6F4I)(PEt3)2] (X = F, Cl, Br, I) 1oX, the iodine substituent on the benzene ring was positioned para and ortho to the metal, respectively. The phosphine substituents were varied in the series, trans

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17

Xu, Wen. "Distribution of chloride and bromide across the snow-sea ice-seawater interface in natural and mesocosm environments and its implication for halogen activation in polar regions." 2015. http://hdl.handle.net/1993/30408.

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Halogen chemistry in the polar boundary layer has received much scientific attention in recent years due to the observations of high concentrations of reactive halogens in springtime. The source of reactive halogens and the site for halogen activation remain a subject of debate. In this thesis, chloride, bromide and sodium ions across the snow-sea ice-seawater interface were measured to study the cryospheric halide distribution and halogen activation in the Arctic. The results show halides/Na+ molar ratios (Br−/Na+ and Cl−/Na+ ratios) in snow are commonly higher than that in seawater, suggesti

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18

Sarwar, Md Golam. "Thermodynamic Studies of Halogen Bonding in Solution and Application to Anion Recognition." Thesis, 2012. http://hdl.handle.net/1807/34876.

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Halogen bonding (XB), the interaction between electron deficient halogen compounds and electron donors, is an established non-covalent interaction in the solid and gaseous phases. Understanding of XB in the solution phase is limited. This thesis describes experimental studies of XB interactions in solution, and the application of XB interactions in anion recognition. Chapter 1 is a brief review of current understanding of XB interaction: theoretical models, studies of XB in solid and gaseous phases and examples in biological systems are discussed. At the end of this chapter, halogen bonding in

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19

LU, GUANG-LIE, and 呂光烈. "Chemistry of triosmium carboxamido complexes in the presence of halogens and reaction of diiron methylene with phosphinimine:role of halide in organometallic complexes." Thesis, 1989. http://ndltd.ncl.edu.tw/handle/83252422307556768788.

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20

Jhuang, De-Chuan, and 莊德川. "The mechanism study of the photorearrangement of the propargyl and allenyl halides by the TEMPO radical trapping, the solvent effect, and the halogen effect." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4zqps9.

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碩士<br>義守大學<br>化學工程學系暨生物技術與化學工程研究所<br>105<br>The radical trapping reaction of propargyl or allenyl bromide(neat) photolyzed with TEMPO, the C3H3 radical generated from the photolysis of propargyl or allenyl bromide was trapped by TEMPO. The structures of C3H3 radical were determined and the mechanism of photo rearrangement of propargyl or allenyl derivatives was discussed. The trapping reaction rate of TEMPO with C3H3 radical was faster than the resonance rate of two hybrid structures of C3H3 radical. The completely delocalized radical intermediate (HC=C-CH2) was excluded in this mechanism. The

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21

Nahler, Nils Hendrik. "Photodissoziation von Halogenwasserstoff- und orientierten Wasserstoff-Edelgas-Halogen-Molekülen in Clusterumgebungen." Doctoral thesis, 2002. http://hdl.handle.net/11858/00-1735-0000-0006-B431-7.

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